Lumbar wear-pad
View Patent ↗Apparatus and associated methods relate to a flexible lumbar wear-pad having an external low-friction high-wear-resistance surface, the lumbar wear-pad configured to be replaceably coupled to the lower back region of a belted fall-protection safety harness. In various embodiments, the lumbar wear-pad may cover a length of the webbing over the hip and lumbar vertebrae regions of a wearer's lower back. In some embodiments a lumbar wear-pad may be field replaceable on a fall-protection safety harness. An exemplary embodiment may have three prominences, a smaller center prominence located near a wearer's lumbar vertebrae and two side prominences located near a wearer's hip bones. In some embodiments, the lumbar wear-pad may be flexible so as to anatomically conform to a wearer's body. Exemplary lumbar wear-pads may provide protection for both a wearer and the wearer's harness during sliding or leaning engagements with vertical surfaces.
1. A fall-protection safety harness for promoting slidable engagement between a wearer and a wall, the fall-protection safety harness comprising:
a webbing configured to be worn around a waist of the wearer; and
a unitary-body lumbar wear-pad comprising high-density polyethylene replaceably coupled to the webbing and covering a length of the webbing at the lumbar region of a wearer's back, the lumbar wear-pad comprising:
a flexible substantially-planar base having an inside surface which inwardly faces the wearer when worn and an outside surface which outwardly faces away from the wearer when worn, the substantially-planar base comprising a plurality of cooling apertures extending through the substantially-planar base from the outside surface to the inside surface; and
three semi-ellipsoidal raised wear-bumps, a first, a second, and a third, projecting outwardly from the outside surface of the substantially-planar base, each of the three wear-bumps having a major dimension along a vertical major axis, a minor dimension along a horizontal minor axis, and a projecting height relative to the outside surface, wherein the major dimension of each wear-bump is substantially greater than the minor dimension, the three wear-bumps aligned horizontally such that each of the three minor axes share a common horizontal centerline, the second wear-bump located substantially half-way between the first and the third wear-bumps,
wherein the first and third wear-bumps have substantially equal major dimensions, substantially equal minor dimensions and substantially equal projecting heights, respectively,
wherein the projecting height of the second wear-bump is less than either one of the projecting heights of the first and third wear-bumps,
wherein each of the first, second and third wear-bumps has a belt aperture aligned to the centerline and configured to receive a belt proximate to the outside surface of the flexible planar base, the belt to pass horizontally through the three wear-bumps without requiring the belt to bend or twist.
2. The fall-protection safety harness of claim 1 , further comprising a lumbar comfort pad proximate to the inside surface of the lumbar wear-pad.
3. The fall-protection safety harness of claim 1 , further comprising the belt.
4. The fall-protection safety harness of claim 1 , wherein the lumbar wear-pad further comprises webbing attachment clips configured to attach to a horizontal length of webbing.
5. A lumbar wear-pad configured to be replaceably coupled to a belted webbing, to cover a length of the belted webbing at a lumbar region of a wearer's back, and to provide for slidable engagement between a wearer and a wall surface, the lumbar wear-pad comprising:
a flexible substantially-planar base having an inwardly-facing surface which inwardly faces the wearer when worn and an outwardly-facing surface which outwardly faces away from the wearer when worn; and
a plurality of raised wear-bumps, projecting outwardly from the outwardly-facing surface, each of the wear-bumps having a major dimension along a major axis, a minor dimension along a minor axis, and a projecting height relative to the outwardly-facing surface,
wherein each of the plurality of raised wear-bumps further comprises a belt aperture configured to receive a belt proximate to the outwardly-facing surface of the flexible planar base, the belt to pass horizontally through the plurality of wear-bumps without requiring the belt to bend or twist,
wherein the plurality of wear-bumps comprise one or more inner wear-bumps and two outer wear-bumps of a horizontal configuration when worn,
wherein the wear bumps are located on the outwardly-facing surface of the planar base, and the inner wear bumps are disposed between the two outer wear bumps,
wherein the horizontal configuration comprises an arrangement of wear-bumps with a horizontal mirror symmetry about a center of the lumbar wear-pad, wherein a horizontal line traverses each wear-bump.
6. The lumbar wear-pad of claim 5 , wherein the projecting height of each of the inner wear-bumps is less than the projecting height of each of the outer wear-bumps.
7. The lumbar wear-pad of claim 5 , wherein each of the plurality of raised wear-bumps has a curved outwardly-facing surface at a contact region which comprises a region wherein the projecting height is greater than a projecting height of a non-contact region.
8. The lumbar wear-pad of claim 5 , wherein the substantially-planar base further comprises a plurality of cooling apertures extending through the substantially-planar base from the outwardly-facing surface to the inwardly-facing surface.
9. The lumbar wear-pad of claim 5 , wherein substantially-planar base is coupled to each of the plurality of raised wear-bumps.
10. The lumbar wear-pad of claim 5 , wherein the one or more inner wear-bumps comprises an odd number of inner wear-bumps.
11. The lumbar wear-pad of claim 5 , wherein the one or more inner wear-bumps comprises an even number of inner wear-bumps.
12. The lumbar wear-pad harness of claim 5 , wherein the lumbar wear-pad further comprises webbing attachment clips configured to attach to a horizontal length of webbing.
13. A lumbar wear-pad configured to be replaceably coupled to a belted webbing, to cover a length of the belted webbing at a lumbar region of a wearer's back, and to provide for slidable engagement between a wearer and a wall surface, the lumbar wear-pad comprising:
a flexible substantially-planar base having an inwardly-facing surface which inwardly faces the wearer when worn and an outwardly-facing surface which outwardly faces away from the wearer when worn; and
a plurality of raised wear-bumps, projecting outwardly from the outwardly-facing surface, each of the wear-bumps having a major dimension along a major axis, a minor dimension along a minor axis, and a projecting height relative to the outwardly-facing surface, and
means for attaching the lumbar wear-pad to a fall-protection safety harness,
wherein each of the plurality of raised wear-bumps further comprises a belt aperture configured to receive a belt proximate to the outwardly-facing surface of the flexible planar base, the belt to pass horizontally through the plurality of wear-bumps without requiring the belt to bend or twist,
wherein the plurality of wear-bumps comprise one or more inner wear-bumps and two outer wear-bumps of a horizontal configuration when worn,
wherein the wear bumps are located on the outwardly-facing surface of the planar base, and the inner wear bumps are disposed between the two outer wear bumps,
wherein the horizontal configuration comprises an arrangement of wear-bumps with a horizontal mirror symmetry about a center of the lumbar wear-pad, wherein a horizontal line traverses each wear-bump.
14. The lumbar wear-pad of claim 13 , wherein the means for attaching the lumbar wear-pad to a fall-protection safety harness comprises webbing attachment clips configured to attach to a horizontal length of webbing.
15. The lumbar wear-pad of claim 13 , wherein the means for attaching the lumbar wear-pad to a fall-protection safety harness comprises rivets.
16. The lumbar wear-pad of claim 13 , wherein the projecting height of each of the inner wear-bumps is less than the projecting height of each of the outer wear-bumps.